CN1480739A - Equipment for detecting and arlarming fault of distribution network in low voltage of electric power - Google Patents
Equipment for detecting and arlarming fault of distribution network in low voltage of electric power Download PDFInfo
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- CN1480739A CN1480739A CNA021323925A CN02132392A CN1480739A CN 1480739 A CN1480739 A CN 1480739A CN A021323925 A CNA021323925 A CN A021323925A CN 02132392 A CN02132392 A CN 02132392A CN 1480739 A CN1480739 A CN 1480739A
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- arlarming
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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Abstract
The equipment includes sample circuit of power network, state estimation circuit, signal transmission unit, alarm control circuit, alarming sound circuit, unit for automatic dialing telephone and information management unit. When faults such as power failure in power network, devices disrupted from external force (stolen), three phase voltages below level and imbalanced three phase voltages are happened, the equipment sends out aural warning and remote alarming through telephone as well as stores, displays and prints out information of time, place and character the fault happened so as to make power supervisor possible to treat faults quickly and accurately. The invention reduces power off time and prevents power facilities from disruption as well as provides optimized power supply scheme.
Description
The present invention relates to a kind of equipment for detecting and arlarming fault of distribution network in low voltage of electric power.
The automation equipment of high pressure power network can be reacted rapidly to accident obstacle completely, excision accident automatically partly or the function of sending warning automatically known by people.
The transformer outlet of low-voltage distribution network (380/220V) is known by people so that the air switch cooperation is fuse protected; when short circuit occurring, excise fault with fuse failure or with the switch tripping; but its sensitivity is relatively poor relatively; protection circuit whole process can not be taken into account, and clear reaction can not be made for the stolen destruction of electric power facility.
The fault of low-voltage distribution network has mostly: the three-phase voltage disappearance same period (power failure); The disappearance same period of three-phase voltage (the stolen outside destroy that waits of equipment); Three-phase voltage serious uneven (load distribution is unbalance or neutral line break); Three-phase voltage low excessively (distribution transforming tap position or line configuring are unreasonable) etc.; At present, after low-voltage distribution network breaks down, have only power consumer find to have a power failure or unusual after, the person that informs the electrical management is again handled just now.This mode is time-consuming many, and information is inaccurate, has restricted the holistic management level of power network, has influenced the quality of power supply of power consumer, and makes the easy stolen destruction of electric power facility.
The object of the present invention is to provide a kind of equipment for detecting and arlarming fault of distribution network in low voltage of electric power, the feasible fault that can observe and predict low-voltage distribution network rapidly accurately.
First kind of equipment for detecting and arlarming fault of distribution network in low voltage of electric power of the present invention comprises: a network sampling circuit is used for taking a sample from the three-phase and four-line electrical network; One status determination circuit is used for the signal of network sampling circuit is judged; One alarm control circuit is used for the signal of responsive state decision circuitry output, subsequently, starts alert acoustic-electric road; And an alert acoustic-electric road, be used for responding the instruction of alarm control circuit and drive the electro-acoustic element sounding.
Network sampling circuit becomes DC quantity with the three-phase voltage of three-phase and four-line electrical network after step-down, rectification, the variation of DC quantity is corresponding to the variation of three-phase voltage in the three-phase and four-line electrical network.Status determination circuit is reacted to the DC quantity of sample circuit, in output and the three-phase and four-line electrical network, disappears three-phase voltage same period, does not disappear the same period, non-equilibrium state corresponding judgment signal.Alarm control circuit is used for responding judges signal, when electrical network generation three-phase voltage does not disappear (outside destroy) or three-phase imbalance (load distribution is unbalance or neutral line break) same period, start police's acoustic-electric road and send audible alarm on the spot, subsequently, the automatic stop of delaying time.
Second kind of equipment for detecting and arlarming fault of distribution network in low voltage of electric power of the present invention includes: a network sampling circuit is used for taking a sample from the three-phase and four-line electrical network; One status determination circuit is used for the signal of network sampling circuit is judged; One signal transmitting apparatus is used for transmitting the signal that decision circuitry is exported; One alarm control circuit is used for the signal of response signal transmitting device output, subsequently, starts alert acoustic-electric road and telephone automatic dialing unit; One alert acoustic-electric road is used for responding the instruction of alarm control circuit and drives the electro-acoustic element sounding; And a telephone automatic dialing unit, be used for and the public telephone line interface, and the instruction of response alarm control circuit and off-hook is dialed the telephone number that prestores.
Network sampling circuit becomes DC quantity with the three-phase voltage of three-phase and four-line electrical network after step-down, rectification, the variation of DC quantity, and in the three-phase and four-line electrical network, the variation of three-phase voltage; Status determination circuit is reacted to the DC quantity of sample circuit, subsequently, in the three-phase and four-line electrical network, three-phase voltage same period is low excessively, disappear (powers failure) same period, do not disappear (outside destroy) same period, the state of uneven (load imbalance or neutral line break), exports the corresponding judgment signal.Signal transmitting apparatus will judge that signal transformation becomes digital signal, via lead or radiowave or power line carrier transmission, the part that is installed in another place with on the lead or radiowave or power line carrier carry out receiving demodulation, become control signal corresponding.Alarm control circuit is used for responsive control signal, starts alert acoustic-electric road and drives the electro-acoustic element sounding and report to the police on the spot, and subsequently, time-delay is converted to prompt tone; And startup telephone automatic dialing unit.Telephone automatic dialing unit is used for the multiple groups of phone numbers that prestores, the command adapted thereto of response alarm control circuit and the off-hook dialing is reported to the police to the person of a receiving a crime report distant place; And, add corresponding sign in the telephone number back of transfering to according to the instruction of alarm control circuit, be convenient to the character that the person of receiving a crime report discerns fault.
The third equipment for detecting and arlarming fault of distribution network in low voltage of electric power of the present invention includes: a network sampling circuit is used for taking a sample from the three-phase and four-line electrical network; One status determination circuit is used for the signal of network sampling circuit is judged; One signal transmitting apparatus is used for transmitting the signal that decision circuitry is exported; One alarm control circuit is used for the signal of response signal transmitting device output, starts alert acoustic-electric road and telephone automatic dialing unit; One alert acoustic-electric road is used for responding the instruction of alarm control circuit and drives the electro-acoustic element sounding; One telephone automatic dialing unit is used for and the public telephone line interface, and the response alarm control circuit instruction and off-hook is dialed the telephone number that prestores.And an apparatus for management of information, be used for the public telephone line interface and respond the information of telephone line, subsequently, the series of processes of make identification, storage, warning, printing.
Network sampling circuit becomes DC quantity with the three-phase voltage of three-phase and four-line electrical network after step-down, rectification, the variation of DC quantity, and in the three-phase and four-line electrical network, the variation of three-phase voltage; Status determination circuit is reacted to the DC quantity of sample circuit, subsequently, in the three-phase and four-line electrical network, three-phase voltage same period is low excessively, disappear (powers failure) same period, do not disappear (outside destroy) same period, the state of uneven (load imbalance or neutral line break), exports the corresponding judgment signal.Signal transmitting apparatus will judge that signal transformation becomes digital signal, via lead or radiowave or power line carrier transmission, the part that is installed in another place with on the lead or radiowave or power line carrier carry out receiving demodulation, become control signal corresponding.Alarm control circuit is used for responsive control signal; Start alert acoustic-electric road, subsequently, time-delay is converted to prompt tone; And startup telephone automatic dialing unit.Telephone automatic dialing unit is used for the multiple groups of phone numbers that prestores, subsequently, and the command adapted thereto of response alarm control circuit and off-hook dialing; And, add corresponding sign in the telephone number back of transfering to according to the instruction of alarm control circuit.Apparatus for management of information and public telephone line interface are used for responding the phone that a plurality of automatic telephone dialling devices are dialled in; Subsequently, telephone number is discerned, converted its time of dialling in, place to literal demonstration and storage; And the identity code of dialling in the telephone number back discerned, the literal that converts nature of trouble to shows and storage; And sound and report to the police and automatic or manual is printed described time, place, nature of trouble.
In the following description of being done in conjunction with the accompanying drawings, purpose of the present invention and feature will become and know more.Wherein,
Fig. 1 is the block scheme of first kind of equipment for detecting and arlarming fault of distribution network in low voltage of electric power of the present invention;
Fig. 2 is the block scheme of second kind of equipment for detecting and arlarming fault of distribution network in low voltage of electric power of the present invention;
Fig. 3 is the block scheme of the third equipment for detecting and arlarming fault of distribution network in low voltage of electric power of the present invention;
Fig. 4 is the block scheme of signal of the present invention through the lead transmitting device;
Fig. 5 is the block scheme of signal of the present invention through the radio wave transmissions device;
Fig. 6 is the block scheme of signal of the present invention through the power line carrier transmitting device.
Components identical or parts adopt identical label among the figure, and wherein three kinds of signal transmitting apparatus 6a～6c only select one of them in each figure.
One embodiment of the present of invention are described below.Fig. 3 is an equipment for detecting and arlarming fault of distribution network in low voltage of electric power block scheme of the present invention.This device comprises a network sampling circuit 1, is used for becoming DC quantity after electrical network three-phase and four-line 380/220V voltage step-down, the rectification; The variation of DC quantity is corresponding to the variation of three-phase voltage in the three-phase and four-line electrical network; One status determination circuit 2 is used for the DC quantity of sample circuit 1 is reacted; In the three-phase and four-line electrical network, occur three-phase voltage same period low excessively, disappear the same period, do not disappear the same period, during unbalanced state, output corresponding judgment signal.
Because in actual use, the electrical network sampling might need to be installed in different place (outdoor and indoor) with state judgment part and other parts, thereby a signal transmitting apparatus is set with two part connections; For satisfying the use of varying environment, the present invention adopts and judges that signal such as Fig. 4 transmit through lead; Judge that signal such as Fig. 5 are through radio wave transmissions with judge signal such as Fig. 6 dissimilar through the power line carrier transmission.
What Fig. 4 described is that the present invention judges signal transmitting apparatus 6a.Behind encoded device 16 codings of the signal of status determination circuit 2 outputs, on lead, be transferred to demoder 17 with digital signal, demoder 17 output control signal corresponding; What Fig. 5 described is that the present invention judges signal transmitting apparatus 6b.Behind encoded device 16 codings of the signal of status determination circuit 2 outputs, modulation wireless launcher 18 is to aerial emitting radio wave, and radiowave is received wireless receiver 19 after demoder 17 decoding back output control signal corresponding; What Fig. 6 described is that the present invention judges signal transmitting apparatus 6c.Behind encoded device 16 codings of the signal of status determination circuit 2 outputs, modulated carrier transmitter 20 sends carrier wave to line of electric force, and carrier wave receiver 21 receives after demoder 17 decoding back output control signal corresponding from line of electric force.
One alarm control circuit 3 is used for the control signal of response signal transmitting device 6a～6c output, starts alert acoustic-electric road 4 and drives loudspeakers 5 and send alert sound, and subsequently, time-delay is converted to prompt tone; And start telephone automatic dialing unit 7 simultaneously.Telephone automatic dialing unit 7 be used for prestoring many winding police persons' telephone number, subsequently, the response command adapted thereto of alarm control circuit and off-hook, dial the multiple groups of phone numbers that prestores that comprises apparatus for management of information in turn, and, add corresponding sign in the telephone number back of transfering to according to the instruction of alarm control circuit.One apparatus for management of information 9, its recognizer 10 and public telephone network interface, and after a plurality of caller IDs are discerned, tell be the incoming call of telephone automatic dialing unit 7 after, handle by 11 pairs of incoming informations of processor, convert its time of dialling in, place, nature of trouble to literal and show by display 14 and storer 12 storages; And sound by alarm 13 and to report to the police and printer 15 carries out printing automatically in real time or manually printing at any time.
In one embodiment of the present of invention Fig. 3, network sampling circuit 1 adopts capacitance decompression, status determination circuit 2 is a main devices with the 16C54 single-chip microcomputer, signal transmitting apparatus 6c is made of ATL90 type Power Line Carrier Communication Module, telephone dialing device 7 is that main part is finished with the 16C54 single-chip microcomputer, and apparatus for management of information 9 is equipped with corresponding hardware and software by multi-purpose computer and universal printer is finished.
The operation of present embodiment is described below.
The network sampling circuit 1 that is installed in the three-phase and four-line line end (outdoor electric pole) that substation transformer confesses detects that voltage disappears (powers failure) same period, voltage does not disappear (outside destroy), Voltage unbalance (phase shortage or neutral line break) same period, the same period is when crossing situation such as low, and status determination circuit 2 is understood export corresponding signal to this; Behind one of this signal process signal transmitting apparatus 6a～6c, pass to the part output control signal corresponding that is installed in another place (indoor); 3 pairs of control signals of alarm control circuit are reacted, and start alert acoustic-electric road 4 driving loudspeakers 5 on the one hand and send audible alarm on the spot; Start telephone automatic dialing unit 7 off-hooks on the other hand and dial the many winding police persons' that prestore telephone number in turn, realize distant place warning, and after phone is put through, show out of order character with numeral flag; Comprise apparatus for management of information 9 that is installed in power supply management mechanism (as power supply station) and the electrician who manages distribution transforming in these many winding police persons' the telephone number, and the working telephone of trouble hunting team etc.After the electrician of management distribution transforming and trouble hunting team receive a crime report, can show according to caller ID and differentiate out of order place and character, arrive the site disposal fault rapidly.Simultaneously, after apparatus for management of information 9 is received a crime report, handle after being discerned according to caller ID and sign; Time, place and the character that fault is taken place is stored on the one hand then, shows and printing with literal on the one hand, and sends audible alarm.The supvr can have access to the data of storage at any time, can analyze the failure condition that some station power distribution transformers take place over a period to come, therefrom draw data such as distributing whether equilibrium such as what, what, substation transformer voltage tap position and whether reasonable, the every phase load of line configuring of outside destroy (electric power facility is stolen) number of times of frequency of power cut, measure is improved thereby take targetedly.
As mentioned above, this equipment for detecting and arlarming fault of distribution network in low voltage of electric power is by the fault of monitoring three-phase and four-line electrical network, in time report to the police with a distant place on the spot, make the electrical management person can be rapidly handling failure accurately, reduce power off time and electric power facility and stolen the loss of destruction, improved the management level of low-voltage distribution network and even whole power network.
Claims (13)
1, a kind of equipment for detecting and arlarming fault of distribution network in low voltage of electric power is characterized in that, it comprises:
One network sampling circuit is used for taking a sample from the three-phase and four-line electrical network:
Status determination circuit is used for the signal of described network sampling circuit is judged;
Alarm control circuit is used for responding the signal that described status determination circuit is exported, and subsequently, starts alert acoustic-electric road;
Alert acoustic-electric road is used for responding the instruction of described alarm control circuit and drives the electro-acoustic element sounding.
2, equipment for detecting and arlarming fault of distribution network in low voltage of electric power as claimed in claim 1 is characterized in that, described network sampling circuit becomes DC quantity with the three-phase voltage of three-phase and four-line electrical network after step-down, rectification; And
The variation of described DC quantity, in described three-phase and four-line electrical network, the variation of three-phase voltage.
3, equipment for detecting and arlarming fault of distribution network in low voltage of electric power as claimed in claim 1, it is characterized in that, described status determination circuit is reacted to the described DC quantity of described sample circuit, subsequently, output corresponding to disappear three-phase voltage same period in the described three-phase and four-line electrical network, do not disappear the same period, unbalanced judgement signal.
4, equipment for detecting and arlarming fault of distribution network in low voltage of electric power as claimed in claim 1 is characterized in that, described alarm control circuit is used for responding described judgement signal; Start described alert acoustic-electric road, subsequently, the time-delay automatic stop.
5, a kind of equipment for detecting and arlarming fault of distribution network in low voltage of electric power is characterized in that, it comprises:
One network sampling circuit is used for taking a sample from the three-phase and four-line electrical network;
Status determination circuit is used for the signal of described network sampling circuit is judged;
Signal transmitting apparatus is used for transmitting the signal that described decision circuitry is exported;
Alarm control circuit is used for responding the signal that described signal transmitting apparatus is exported, and subsequently, starts alert acoustic-electric road and telephone automatic dialing circuit;
Alert acoustic-electric road is used for responding the instruction of described alarm control circuit and drives the electro-acoustic element sounding;
Telephone automatic dialing unit is used for and the public telephone line interface, and
Respond the instruction of described alarm control circuit and off-hook is dialed the multiple groups of phone numbers that prestores in turn.
6, equipment for detecting and arlarming fault of distribution network in low voltage of electric power as claimed in claim 5, it is characterized in that, described status determination circuit is reacted to the described DC quantity of described sample circuit, subsequently, output is low excessively corresponding to three-phase voltage same period in the described three-phase and four-line electrical network, disappear the same period, do not disappear the same period, unbalanced judgement signal.
7, equipment for detecting and arlarming fault of distribution network in low voltage of electric power as claimed in claim 5 is characterized in that, described signal transmitting apparatus becomes digital signal with described judgement signal transformation, subsequently, transmits on lead; And
The digital signal that transmits on the lead is received decoding, become control signal corresponding.
8, equipment for detecting and arlarming fault of distribution network in low voltage of electric power as claimed in claim 5 is characterized in that, described signal transmitting apparatus becomes digital signal with described judgement signal transformation, subsequently, and the emission of modulation high frequency radio wave; And
With described radiowave receiving demodulation, become control signal corresponding.
9, equipment for detecting and arlarming fault of distribution network in low voltage of electric power as claimed in claim 5 is characterized in that, described signal transmitting apparatus becomes digital signal with described judgement signal transformation, and subsequently, the modulation high-frequency carrier signal transmits on line of electric force; And
High-frequency carrier signal receiving demodulation with line of electric force transmits becomes control signal corresponding.
10, equipment for detecting and arlarming fault of distribution network in low voltage of electric power as claimed in claim 5 is characterized in that, described alarm control circuit is used for responding described control signal;
Start described alert acoustic-electric road, subsequently, time-delay is converted to prompt tone; And
Start described telephone automatic dialing circuit.
11, equipment for detecting and arlarming fault of distribution network in low voltage of electric power as claimed in claim 5, it is characterized in that described telephone automatic dialing unit is used for and the public telephone line interface, and the multiple groups of phone numbers that prestores, subsequently, respond the command adapted thereto of described alarm control circuit and the off-hook dialing.And
According to the instruction of described alarm control circuit, add corresponding sign in the telephone number back of transfering to.
12, a kind of equipment for detecting and arlarming fault of distribution network in low voltage of electric power is characterized in that, it comprises:
One network sampling circuit is used for taking a sample from the three-phase and four-line electrical network;
Status determination circuit is used for the signal of described network sampling circuit is judged;
Signal transmitting apparatus is used for transmitting the signal that described decision circuitry is exported;
Alarm control circuit is used for responding the signal that described signal transmitting apparatus is exported, and subsequently, starts alert acoustic-electric road and telephone automatic dialing unit;
Alert acoustic-electric road is used for responding the instruction of described alarm control circuit and drives the electro-acoustic element sounding;
Telephone automatic dialing unit is used for and the public telephone line interface, and
Respond the instruction of described alarm control circuit and off-hook is dialed the multiple groups of phone numbers that prestores in turn;
One apparatus for management of information is used for the public telephone line interface and responds the information of telephone line, subsequently, and the processing of make identification, storage, demonstration, warning, printing.
13, equipment for detecting and arlarming fault of distribution network in low voltage of electric power as claimed in claim 12 is characterized in that, described apparatus for management of information and public telephone line interface are used for responding the phone that a plurality of described automatic telephone dialling devices are dialled in; Subsequently, a plurality of phone informations are handled, the place of its time of dialling in, corresponding telephone number is converted to literal shows and storage; And
The described corresponding sign of dialling in the telephone number back is discerned, and the literal that converts nature of trouble to shows and storage; And
Send audible alarm, and
Automatically print at any time in good time or manually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021323925A CN1480739A (en) | 2002-09-03 | 2002-09-03 | Equipment for detecting and arlarming fault of distribution network in low voltage of electric power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021323925A CN1480739A (en) | 2002-09-03 | 2002-09-03 | Equipment for detecting and arlarming fault of distribution network in low voltage of electric power |
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| CN1480739A true CN1480739A (en) | 2004-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA021323925A Pending CN1480739A (en) | 2002-09-03 | 2002-09-03 | Equipment for detecting and arlarming fault of distribution network in low voltage of electric power |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101373195B (en) * | 2007-08-24 | 2011-02-09 | 孟津县电业公司 | Platform zone power off notifying device |
| CN102087343A (en) * | 2009-12-02 | 2011-06-08 | 河南省电力公司许昌供电公司 | Method for rapidly monitoring fault of sampling device |
| CN102377240A (en) * | 2010-08-10 | 2012-03-14 | 上海市电力公司 | Accident resultant signal emergency alarming method for 35KV substation |
| CN103728507A (en) * | 2013-11-18 | 2014-04-16 | 芜湖大学科技园发展有限公司 | Grid fault diagnosis method based on data mining |
| CN105242141A (en) * | 2015-10-15 | 2016-01-13 | 安徽省德诺电子科技有限公司 | 380V-and-below line fault emergency calling system |
| CN106056860A (en) * | 2016-07-06 | 2016-10-26 | 苏州华安普电力科技股份有限公司 | Unmanned transformer substation fuse security system |
| CN111398718A (en) * | 2020-04-10 | 2020-07-10 | 云南电网有限责任公司昭通供电局 | Distribution network fault monitoring device and method based on time sequence and phase asymmetry principle |
-
2002
- 2002-09-03 CN CNA021323925A patent/CN1480739A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101373195B (en) * | 2007-08-24 | 2011-02-09 | 孟津县电业公司 | Platform zone power off notifying device |
| CN102087343A (en) * | 2009-12-02 | 2011-06-08 | 河南省电力公司许昌供电公司 | Method for rapidly monitoring fault of sampling device |
| CN102087343B (en) * | 2009-12-02 | 2013-04-17 | 河南省电力公司许昌供电公司 | Method for rapidly monitoring fault of sampling device |
| CN102377240A (en) * | 2010-08-10 | 2012-03-14 | 上海市电力公司 | Accident resultant signal emergency alarming method for 35KV substation |
| CN102377240B (en) * | 2010-08-10 | 2013-09-11 | 上海市电力公司 | Accident resultant signal emergency alarming method for 35KV substation |
| CN103728507A (en) * | 2013-11-18 | 2014-04-16 | 芜湖大学科技园发展有限公司 | Grid fault diagnosis method based on data mining |
| CN105242141A (en) * | 2015-10-15 | 2016-01-13 | 安徽省德诺电子科技有限公司 | 380V-and-below line fault emergency calling system |
| CN106056860A (en) * | 2016-07-06 | 2016-10-26 | 苏州华安普电力科技股份有限公司 | Unmanned transformer substation fuse security system |
| CN111398718A (en) * | 2020-04-10 | 2020-07-10 | 云南电网有限责任公司昭通供电局 | Distribution network fault monitoring device and method based on time sequence and phase asymmetry principle |
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